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Polycyclic Aromatic Hydrocarbons in Agricultural Waterways in Gyeonggi and Gangwon Provinces, Korea

경기 및 강원지역 농업용수 중 PAHs의 모니터링 연구

  • Kim, Leesun (School of Applied Biosciences, Kyungpook National University) ;
  • Park, Byung-Jun (Chemical Safety Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Sung-Eun (School of Applied Biosciences, Kyungpook National University)
  • 김이선 (경북대학교 응용생명과학부) ;
  • 박병준 (농촌진흥청 국립농업과학원 농 산물안전성부) ;
  • 이성은 (경북대학교 응용생명과학부)
  • Received : 2016.08.05
  • Accepted : 2016.08.19
  • Published : 2016.09.30

Abstract

Level and distribution of fourteen polycyclic aromatic hydrocarbons (PAHs) in the agricultural water samples collected in the waterways located in Gyeonggi and Gangwon, Korea were determined for monitoring and risk assessment. A simplified, fast but effective extraction and clean-up methods combined with gas chromatography tandem mass spectrometry (GC-MS/MS) was employed to measure the concentration of the target compounds. The extraction of the analytes of interest in water sample (10 mL) was performed with acetonitrile (10 mL) and the salt. To purify the target PAHs, the clean-up procedure was employed with 2 mL tubes of dispersive solid phase extraction. The optimized method was validated with recoveries, method detection limit (MDL), accuracy and precision. Good recoveries for each PAHs at 10 and $25{\mu}g\;L^{-1}$ were achieved (60 to 110%, with RSD <20%) with linearity (>0.99). MDL for all the analytes was achieved with $0.2{\mu}g\;L^{-1}$. GC-MS/MS results showed that concentration of phenanthrene in the water samples from Gyeonggi (20 sites) ranged from 0.82 to $2.56{\mu}g\;L^{-1}$ and from Gangwon (15 sites) ranged from 0.83 to $1.62{\mu}g\;L^{-1}$. Other PAHs were not found in the water samples but the continuous monitoring for these areas were required.

다환방향족탄화수소류 (PAHs, Polycyclic aromatic hydrocarbons)는 열분해 또는 불완전연소 과정에서 발생하는 방향족 고리를 포함하고 있는 유기화합물질로서 생물 및 인간에 해를 입힐 수 있는 독성물질들로 알려져 있다. 이에 본 연구는 경기도 20곳 및 강원도 15곳에서 농업용수를 채취하여, 시료 중 PAHs 농도와 분포 특성을 규명하였다. 쉽고 간단하고 효과적인 케처스 추출법 및 d-SPE 정제법을 이용해 분석 시료를 준비한 후에 GC-MS/MS를 이용해 14종의 PAHs 분석하였다. 경기도 강원도 지역에서 채취한 모든 시료에서 Phenanthrene이 검출되었으며 경기도 지역의 phenanthrene 농도는 $0.82{\sim}2.56{\mu}g\;L^{-1}$였고 강원도 지역의 phenanthrene 농도는 $0.83{\sim}1.62{\mu}g\;L^{-1}$였다. 경기도 한 곳에서만 fluoranthene ($0.26{\mu}g\;L^{-1}$)이 검출되었다. 분석법의 효율과 신뢰성을 확신하기 위한 회수율 시험에서 60~110%의 회수율을 얻었다. 상대표준편차는 PAHs 14종 모두 20% 이하였다.

Keywords

References

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